都市快轨交通·第31卷第5期2018年10月 doi: 10.3969/j.issn.1672-6073.2018.05.004
热点研讨
轨道交通车地通信 LTE特殊场景覆盖分析与解决方案
徐淑鹏
（郑州市轨道交通有限公司，郑州450000）
摘要：在国内轨道交通快速发展下，城市轨道交通线路正在向网络化发展。轨道交通的线路、车站、车辆段、隧道区间等建设情况日超趋复杂，使基于TD-LTE技术的车地通信系统的设计、建设和维护难度越来越大。在规划设计和建设中应保证车地业务的安全、可靠，减少信号干扰，应用新的技术满足轨道交通不断增长的需求。基于郑州市轨道交通车地无线LTE综合承载方案，结合前期建设、运营的经验，针对轨道交通线网中多种复杂场景的应用分析，结合1.8G频率资源优化配置，提出特殊场景下车地通信LTE覆盖解决方案，并对不同场景下空间隔
离、频率隔离、共基站覆盖等方案进行对比分析，为实际工程建设提供有效的理论依据与工程实施方法。关键词：轨道交通；车地通信：特殊场景；综合承载
中图分类号：U231.1
文献标志码：A
文章编号：1672-6073(2018)05-0017-05
SpecialScenarioCoverageAnalysisandSolutionstoLTETrain-Ground
CommunicationsofRailTransit
XUShupeng
(Zhengzhou Metro Co., Ltd., Zhengzhou 450000)
Abstract: Urban rail transit operations in China have changed from single line to multiline networks and its operation information is exchanged through communications networks, The construction of lines, stations, depots and tunnels for urban rail transit has become more and more complicated, which gives rise to difficulties in designing, building and maintaining Time-division Long-term Evolution (TD-LTE) train-ground communications systems. Therefore, new technology is required to improve safety and liability and to reduce signal interference in the planning and building of the train-ground eoa LTE wireless train-ground communications system as an example. It expounds the coverage of the system under complicated scenarios in urban rail transit line networks. Optimal configuration of 1.8G frequency resources is presented and the solutions to special scenario LTE communications coverage are proposed. The schemes of spatial isolation, frequency isolation and co-site coverage are compared and analyzed in a bid to provide theoretical basis and engineering methods for engineering practice
Keywords: urban rail transit; train-ground communications; special scenario; overall service capacity
随城市轨道交通的不断发展和LTE车地通信
技术的不断应用，通信工程部署面临越来越多的复杂收稿日期：2018-03-29
修回日期：2018-04-16
作者简介：徐淑鹏，男，本科，技术管理部副部长，高级工程师，
从事轨道交通通信、信技术研究，Xsp1969@qq.com
场景，如多条线共用车辆段、同站台换乘、长大区间盖、单洞双线、全自动驾驶等场景。在实际LTE网络部署中，如何充分利用1.8G频率资源实现车地业务的安全、可靠承载，并减少信号干扰。同时，随着LTE 技术的不断发展，需要考虑如何应用新的技术满足轨道交通不断增长的需求。针对上述各类场景的特点与
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